IONIC-CONDUCTIVITY IN SODIUM MAGNESIUM SILICATES

被引：21

作者：

SHANNON, RD

机构：

[1] Central Research and Development Department, E.I. du Pont de Nemours and Company, Experimental Station, Wilmington, 19898, Delaware

来源：

PHYSICS AND CHEMISTRY OF MINERALS | 1979年 / 4卷 / 02期

关键词：

D O I：

10.1007/BF00307558

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Na2MgSiO4 crystals prepared hydrothermally at 700° C and 3,000 atm are related to carnegieite with SG Pmn21, a=7.015(2), b=10.968(2), and c=5.260(1). Na conductivity in Na2MgSiO4 is 3.0×10-5 (ohm-cm)-1 at 300° C but can be raised to 1.1×10-3 (ohm-cm)-1 by creating Na vacancies in the composition Na1.9Mg0.9Al0.1O4. Na4Mg2Si3O10 is also a cristobalite-related carnegieite with the orthorhombic cell a=10.584(7), b=14.328(7), and c=5.233(5). The Na conductivity of Na4Mg2Si3O10 is 4.8×10-3 (ohm-cm)-1 at 300° C. © 1979 Springer-Verlag.

引用

页码：139 / 148

页数：10

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